[thirdparty/openssl.git] / crypto / rsa / rsa_ameth.c

/* crypto/rsa/rsa_ameth.c */
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
 * project 2006.
 */
/* ====================================================================
 * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

#include <stdio.h>
#include "cryptlib.h"
#include <openssl/asn1t.h>
#include <openssl/x509.h>
#include <openssl/rsa.h>
#include "asn1_locl.h"

static int rsa_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey)
	{
	unsigned char *penc = NULL;
	int penclen;
	penclen = i2d_RSAPublicKey(pkey->pkey.rsa, &penc);
	if (penclen <= 0)
		return 0;
	if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_RSA),
				V_ASN1_NULL, NULL, penc, penclen))
		return 1;

	OPENSSL_free(penc);
	return 0;
	}

static int rsa_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey)
	{
	const unsigned char *p;
	int pklen;
	RSA *rsa = NULL;
	if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, NULL, pubkey))
		return 0;
	if (!(rsa = d2i_RSAPublicKey(NULL, &p, pklen)))
		{
		RSAerr(RSA_F_RSA_PUB_DECODE, ERR_R_RSA_LIB);
		return 0;
		}
	EVP_PKEY_assign_RSA (pkey, rsa);
	return 1;
	}

static int rsa_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
	{
	if (BN_cmp(b->pkey.rsa->n,a->pkey.rsa->n) != 0
		|| BN_cmp(b->pkey.rsa->e,a->pkey.rsa->e) != 0)
			return 0;
	return 1;
	}

static int old_rsa_priv_decode(EVP_PKEY *pkey,
					const unsigned char **pder, int derlen)
	{
	RSA *rsa;
	if (!(rsa = d2i_RSAPrivateKey (NULL, pder, derlen)))
		{
		RSAerr(RSA_F_RSA_PRIV_DECODE, ERR_R_RSA_LIB);
		return 0;
		}
	EVP_PKEY_assign_RSA(pkey, rsa);
	return 1;
	}

static int old_rsa_priv_encode(const EVP_PKEY *pkey, unsigned char **pder)
	{
	return i2d_RSAPrivateKey(pkey->pkey.rsa, pder);
	}

static int rsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey)
	{
	unsigned char *rk = NULL;
	int rklen;
	rklen = i2d_RSAPrivateKey(pkey->pkey.rsa, &rk);

	if (rklen <= 0)
		{
		RSAerr(RSA_F_RSA_PRIV_ENCODE,ERR_R_MALLOC_FAILURE);
		return 0;
		}

	if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_rsaEncryption), 0,
				V_ASN1_NULL, NULL, rk, rklen))
		{
		RSAerr(RSA_F_RSA_PRIV_ENCODE,ERR_R_MALLOC_FAILURE);
		return 0;
		}

	return 1;
	}

static int rsa_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8)
	{
	const unsigned char *p;
	int pklen;
	if (!PKCS8_pkey_get0(NULL, &p, &pklen, NULL, p8))
		return 0;
	return old_rsa_priv_decode(pkey, &p, pklen);
	}

static int int_rsa_size(const EVP_PKEY *pkey)
	{
	return RSA_size(pkey->pkey.rsa);
	}

static int rsa_bits(const EVP_PKEY *pkey)
	{
	return BN_num_bits(pkey->pkey.rsa->n);
	}

static void int_rsa_free(EVP_PKEY *pkey)
	{
	RSA_free(pkey->pkey.rsa);
	}


static void update_buflen(const BIGNUM *b, size_t *pbuflen)
	{
	size_t i;
	if (!b)
		return;
	if (*pbuflen < (i = (size_t)BN_num_bytes(b)))
			*pbuflen = i;
	}

static int do_rsa_print(BIO *bp, const RSA *x, int off, int priv)
	{
	char *str;
	const char *s;
	unsigned char *m=NULL;
	int ret=0, mod_len = 0;
	size_t buf_len=0;

	update_buflen(x->n, &buf_len);
	update_buflen(x->e, &buf_len);

	if (priv)
		{
		update_buflen(x->d, &buf_len);
		update_buflen(x->p, &buf_len);
		update_buflen(x->q, &buf_len);
		update_buflen(x->dmp1, &buf_len);
		update_buflen(x->dmq1, &buf_len);
		update_buflen(x->iqmp, &buf_len);
		}

	m=(unsigned char *)OPENSSL_malloc(buf_len+10);
	if (m == NULL)
		{
		RSAerr(RSA_F_RSA_PRINT,ERR_R_MALLOC_FAILURE);
		goto err;
		}

	if (x->n != NULL)
		mod_len = BN_num_bits(x->n);

	if(!BIO_indent(bp,off,128))
		goto err;

	if (priv && x->d)
		{
		if (BIO_printf(bp,"Private-Key: (%d bit)\n", mod_len)
			<= 0) goto err;
		str = "modulus:";
		s = "publicExponent:";
		}
	else
		{
		if (BIO_printf(bp,"Public-Key: (%d bit)\n", mod_len)
			<= 0) goto err;
		str = "Modulus:";
		s= "Exponent:";
		}
	if (!ASN1_bn_print(bp,str,x->n,m,off)) goto err;
	if (!ASN1_bn_print(bp,s,x->e,m,off))
		goto err;
	if (priv)
		{
		if (!ASN1_bn_print(bp,"privateExponent:",x->d,m,off))
			goto err;
		if (!ASN1_bn_print(bp,"prime1:",x->p,m,off))
			goto err;
		if (!ASN1_bn_print(bp,"prime2:",x->q,m,off))
			goto err;
		if (!ASN1_bn_print(bp,"exponent1:",x->dmp1,m,off))
			goto err;
		if (!ASN1_bn_print(bp,"exponent2:",x->dmq1,m,off))
			goto err;
		if (!ASN1_bn_print(bp,"coefficient:",x->iqmp,m,off))
			goto err;
		}
	ret=1;
err:
	if (m != NULL) OPENSSL_free(m);
	return(ret);
	}

static int rsa_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent,
							ASN1_PCTX *ctx)
	{
	return do_rsa_print(bp, pkey->pkey.rsa, indent, 0);
	}


static int rsa_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent,
							ASN1_PCTX *ctx)
	{
	return do_rsa_print(bp, pkey->pkey.rsa, indent, 1);
	}


static int rsa_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
	{
	switch (op)
		{
		case ASN1_PKEY_CTRL_PKCS7_SIGN:
		if (arg1 == 0)
			{
			X509_ALGOR *alg;
			PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, NULL, &alg);
			X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption),
							V_ASN1_NULL, 0);
			}
		return 1;

		default:
		return -2;

		}

	}


const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[] = 
	{
		{
		EVP_PKEY_RSA,
		EVP_PKEY_RSA,
		0,

		"RSA",
		"OpenSSL RSA method",

		rsa_pub_decode,
		rsa_pub_encode,
		rsa_pub_cmp,
		rsa_pub_print,

		rsa_priv_decode,
		rsa_priv_encode,
		rsa_priv_print,

		int_rsa_size,
		rsa_bits,

		0,0,0,0,0,0,

		int_rsa_free,
		rsa_pkey_ctrl,
		old_rsa_priv_decode,
		old_rsa_priv_encode
		},

		{
		EVP_PKEY_RSA2,
		EVP_PKEY_RSA,
		ASN1_PKEY_ALIAS
		}
	};
Commit	Line	Data
09b88a4a	1	/* crypto/rsa/rsa_ameth.c */
448be743 DSH	2	/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
	3	* project 2006.
	4	*/
	5	/* ====================================================================
	6	* Copyright (c) 2006 The OpenSSL Project. All rights reserved.
	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions
	10	* are met:
	11	*
	12	* 1. Redistributions of source code must retain the above copyright
	13	* notice, this list of conditions and the following disclaimer.
	14	*
	15	* 2. Redistributions in binary form must reproduce the above copyright
	16	* notice, this list of conditions and the following disclaimer in
	17	* the documentation and/or other materials provided with the
	18	* distribution.
	19	*
	20	* 3. All advertising materials mentioning features or use of this
	21	* software must display the following acknowledgment:
	22	* "This product includes software developed by the OpenSSL Project
	23	* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
	24	*
	25	* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
	26	* endorse or promote products derived from this software without
	27	* prior written permission. For written permission, please contact
	28	* licensing@OpenSSL.org.
	29	*
	30	* 5. Products derived from this software may not be called "OpenSSL"
	31	* nor may "OpenSSL" appear in their names without prior written
	32	* permission of the OpenSSL Project.
	33	*
	34	* 6. Redistributions of any form whatsoever must retain the following
	35	* acknowledgment:
	36	* "This product includes software developed by the OpenSSL Project
	37	* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
	38	*
	39	* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
	40	* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	41	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	42	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
	43	* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	44	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	45	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	46	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	47	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	48	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	49	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
	50	* OF THE POSSIBILITY OF SUCH DAMAGE.
	51	* ====================================================================
	52	*
	53	* This product includes cryptographic software written by Eric Young
	54	* (eay@cryptsoft.com). This product includes software written by Tim
	55	* Hudson (tjh@cryptsoft.com).
	56	*
	57	*/
	58
	59	#include <stdio.h>
	60	#include "cryptlib.h"
	61	#include <openssl/asn1t.h>
	62	#include <openssl/x509.h>
	63	#include <openssl/rsa.h>
18e377b4	64	#include "asn1_locl.h"
448be743	65
6f81892e	66	static int rsa_pub_encode(X509_PUBKEY pk, const EVP_PKEY pkey)
448be743 DSH	67	{
	68	unsigned char *penc = NULL;
	69	int penclen;
	70	penclen = i2d_RSAPublicKey(pkey->pkey.rsa, &penc);
	71	if (penclen <= 0)
	72	return 0;
	73	if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_RSA),
	74	V_ASN1_NULL, NULL, penc, penclen))
	75	return 1;
	76
	77	OPENSSL_free(penc);
	78	return 0;
	79	}
	80
	81	static int rsa_pub_decode(EVP_PKEY pkey, X509_PUBKEY pubkey)
	82	{
	83	const unsigned char *p;
	84	int pklen;
	85	RSA *rsa = NULL;
	86	if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, NULL, pubkey))
	87	return 0;
	88	if (!(rsa = d2i_RSAPublicKey(NULL, &p, pklen)))
	89	{
	90	RSAerr(RSA_F_RSA_PUB_DECODE, ERR_R_RSA_LIB);
	91	return 0;
	92	}
	93	EVP_PKEY_assign_RSA (pkey, rsa);
	94	return 1;
	95	}
	96
6f81892e DSH	97	static int rsa_pub_cmp(const EVP_PKEY a, const EVP_PKEY b)
	98	{
	99	if (BN_cmp(b->pkey.rsa->n,a->pkey.rsa->n) != 0
	100	\|\| BN_cmp(b->pkey.rsa->e,a->pkey.rsa->e) != 0)
	101	return 0;
	102	return 1;
	103	}
	104
e4263314 DSH	105	static int old_rsa_priv_decode(EVP_PKEY *pkey,
e4263314 DSH	106	const unsigned char **pder, int derlen)
448be743	107	{
e4263314 DSH	108	RSA *rsa;
e4263314 DSH	109	if (!(rsa = d2i_RSAPrivateKey (NULL, pder, derlen)))
448be743 DSH	110	{
	111	RSAerr(RSA_F_RSA_PRIV_DECODE, ERR_R_RSA_LIB);
	112	return 0;
	113	}
e4263314	114	EVP_PKEY_assign_RSA(pkey, rsa);
448be743 DSH	115	return 1;
	116	}
	117
e4263314 DSH	118	static int old_rsa_priv_encode(const EVP_PKEY pkey, unsigned char *pder)
	119	{
	120	return i2d_RSAPrivateKey(pkey->pkey.rsa, pder);
	121	}
	122
6f81892e	123	static int rsa_priv_encode(PKCS8_PRIV_KEY_INFO p8, const EVP_PKEY pkey)
448be743 DSH	124	{
	125	unsigned char *rk = NULL;
	126	int rklen;
	127	rklen = i2d_RSAPrivateKey(pkey->pkey.rsa, &rk);
	128
	129	if (rklen <= 0)
	130	{
	131	RSAerr(RSA_F_RSA_PRIV_ENCODE,ERR_R_MALLOC_FAILURE);
	132	return 0;
	133	}
	134
	135	if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_rsaEncryption), 0,
	136	V_ASN1_NULL, NULL, rk, rklen))
	137	{
	138	RSAerr(RSA_F_RSA_PRIV_ENCODE,ERR_R_MALLOC_FAILURE);
	139	return 0;
	140	}
	141
	142	return 1;
	143	}
	144
e4263314 DSH	145	static int rsa_priv_decode(EVP_PKEY pkey, PKCS8_PRIV_KEY_INFO p8)
	146	{
	147	const unsigned char *p;
	148	int pklen;
	149	if (!PKCS8_pkey_get0(NULL, &p, &pklen, NULL, p8))
	150	return 0;
	151	return old_rsa_priv_decode(pkey, &p, pklen);
	152	}
	153
6f81892e DSH	154	static int int_rsa_size(const EVP_PKEY *pkey)
	155	{
	156	return RSA_size(pkey->pkey.rsa);
	157	}
	158
	159	static int rsa_bits(const EVP_PKEY *pkey)
	160	{
	161	return BN_num_bits(pkey->pkey.rsa->n);
	162	}
	163
	164	static void int_rsa_free(EVP_PKEY *pkey)
	165	{
	166	RSA_free(pkey->pkey.rsa);
	167	}
	168
35208f36 DSH	169
	170	static void update_buflen(const BIGNUM b, size_t pbuflen)
	171	{
c20276e4	172	size_t i;
35208f36 DSH	173	if (!b)
	174	return;
	175	if (*pbuflen < (i = (size_t)BN_num_bytes(b)))
	176	*pbuflen = i;
	177	}
	178
	179	static int do_rsa_print(BIO bp, const RSA x, int off, int priv)
	180	{
	181	char *str;
	182	const char *s;
	183	unsigned char *m=NULL;
	184	int ret=0, mod_len = 0;
	185	size_t buf_len=0;
	186
	187	update_buflen(x->n, &buf_len);
	188	update_buflen(x->e, &buf_len);
	189
	190	if (priv)
	191	{
	192	update_buflen(x->d, &buf_len);
	193	update_buflen(x->p, &buf_len);
	194	update_buflen(x->q, &buf_len);
	195	update_buflen(x->dmp1, &buf_len);
	196	update_buflen(x->dmq1, &buf_len);
	197	update_buflen(x->iqmp, &buf_len);
	198	}
	199
	200	m=(unsigned char *)OPENSSL_malloc(buf_len+10);
	201	if (m == NULL)
	202	{
	203	RSAerr(RSA_F_RSA_PRINT,ERR_R_MALLOC_FAILURE);
	204	goto err;
	205	}
	206
	207	if (x->n != NULL)
	208	mod_len = BN_num_bits(x->n);
	209
	210	if(!BIO_indent(bp,off,128))
	211	goto err;
	212
	213	if (priv && x->d)
	214	{
	215	if (BIO_printf(bp,"Private-Key: (%d bit)\n", mod_len)
	216	<= 0) goto err;
	217	str = "modulus:";
	218	s = "publicExponent:";
	219	}
	220	else
	221	{
	222	if (BIO_printf(bp,"Public-Key: (%d bit)\n", mod_len)
	223	<= 0) goto err;
	224	str = "Modulus:";
	225	s= "Exponent:";
	226	}
	227	if (!ASN1_bn_print(bp,str,x->n,m,off)) goto err;
	228	if (!ASN1_bn_print(bp,s,x->e,m,off))
	229	goto err;
	230	if (priv)
	231	{
	232	if (!ASN1_bn_print(bp,"privateExponent:",x->d,m,off))
	233	goto err;
	234	if (!ASN1_bn_print(bp,"prime1:",x->p,m,off))
	235	goto err;
	236	if (!ASN1_bn_print(bp,"prime2:",x->q,m,off))
237	goto err;
238	if (!ASN1_bn_print(bp,"exponent1:",x->dmp1,m,off))
239	goto err;
240	if (!ASN1_bn_print(bp,"exponent2:",x->dmq1,m,off))
241	goto err;
242	if (!ASN1_bn_print(bp,"coefficient:",x->iqmp,m,off))
243	goto err;
244	}
245	ret=1;
246	err:
247	if (m != NULL) OPENSSL_free(m);
248	return(ret);
249	}
250
251	static int rsa_pub_print(BIO bp, const EVP_PKEY pkey, int indent,
252	ASN1_PCTX *ctx)
253	{
254	return do_rsa_print(bp, pkey->pkey.rsa, indent, 0);
255	}
256
257
258	static int rsa_priv_print(BIO bp, const EVP_PKEY pkey, int indent,
259	ASN1_PCTX *ctx)
260	{
261	return do_rsa_print(bp, pkey->pkey.rsa, indent, 1);
262	}
263
492a9e24 DSH	264
	265	static int rsa_pkey_ctrl(EVP_PKEY pkey, int op, long arg1, void arg2)
	266	{
	267	switch (op)
	268	{
	269	case ASN1_PKEY_CTRL_PKCS7_SIGN:
	270	if (arg1 == 0)
	271	{
	272	X509_ALGOR *alg;
	273	PKCS7_SIGNER_INFO_get0_algs(arg2, NULL, NULL, &alg);
	274	X509_ALGOR_set0(alg, OBJ_nid2obj(NID_rsaEncryption),
	275	V_ASN1_NULL, 0);
	276	}
	277	return 1;
	278
	279	default:
	280	return -2;
	281
	282	}
	283
	284	}
	285
	286
448be743 DSH	287	const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[] =
	288	{
	289	{
	290	EVP_PKEY_RSA,
	291	EVP_PKEY_RSA,
	292	0,
6f81892e	293
e4263314	294	"RSA",
d82e2718 DSH	295	"OpenSSL RSA method",
d82e2718 DSH	296
448be743 DSH	297	rsa_pub_decode,
448be743 DSH	298	rsa_pub_encode,
6f81892e	299	rsa_pub_cmp,
35208f36	300	rsa_pub_print,
6f81892e	301
448be743 DSH	302	rsa_priv_decode,
448be743 DSH	303	rsa_priv_encode,
35208f36	304	rsa_priv_print,
6f81892e DSH	305
	306	int_rsa_size,
	307	rsa_bits,
	308
	309	0,0,0,0,0,0,
	310
	311	int_rsa_free,
492a9e24	312	rsa_pkey_ctrl,
e4263314 DSH	313	old_rsa_priv_decode,
e4263314 DSH	314	old_rsa_priv_encode
448be743 DSH	315	},
	316
	317	{
	318	EVP_PKEY_RSA2,
	319	EVP_PKEY_RSA,
	320	ASN1_PKEY_ALIAS
	321	}
	322	};